Instruction manual

III
z Output current detection function (Pr. 150, Pr. 151)..............................................................................................130
z Zero current detection (Pr. 152, Pr. 153)...............................................................................................................131
z RT signal activated condition selection (Pr. 155)..................................................................................................132
z Stall prevention function and current limit function (Pr. 156).................................................................................132
z OL signal output timer (Pr. 157) ............................................................................................................................134
z User group selection (Pr. 160, Pr. 173 to Pr. 176) ................................................................................................135
z Watt-hour meter clear/actual operation hour meter clear (Pr. 170, Pr. 171).........................................................136
z Input terminal function selection (Pr. 180 to Pr. 186) ............................................................................................136
z Output terminal function selection (Pr. 190 to Pr. 195) .........................................................................................139
z User initial value setting (Pr. 199) .........................................................................................................................141
z Programmed operation function (Pr. 200 to Pr. 231) ............................................................................................142
z Cooling fan operation selection (Pr. 244)..............................................................................................................146
z Stop selection (Pr. 250).........................................................................................................................................147
z Output phase failure protection selection (Pr. 251)...............................................................................................148
z Override bias/gain (Pr. 252, Pr. 253).....................................................................................................................148
z Power failure-time deceleration-to-stop function (Pr. 261 to Pr. 266) ...................................................................149
z Stop-on-contact, load torque high-speed frequency selection (Pr. 270) ...............................................................151
z High-speed frequency control (Pr. 271 to Pr. 274)................................................................................................152
z Stop on contact (Pr. 275, Pr. 276).........................................................................................................................156
z Brake sequence function (Pr. 278 to Pr. 285) .......................................................................................................159
z Droop control (Pr. 286, Pr. 287) ............................................................................................................................163
z Meter (frequency meter) calibration (Pr. 900, Pr. 901)..........................................................................................164
z Frequency setting voltage (current) bias and gain (Pr. 902 to Pr. 905).................................................................166
z Buzzer control (Pr. 990) ........................................................................................................................................171
5 PROTECTIVE FUNCTIONS 172
5.1 Errors (Alarms) ......................................................................................................................................................172
5.1.1 Error (alarm) definitions .................................................................................................................................172
5.1.2 To know the operating status at the occurrence of an alarm .........................................................................181
5.1.3 Correspondences between digital and actual characters ..............................................................................181
5.1.4 Alarm code output..........................................................................................................................................182
5.1.5 Resetting the inverter.....................................................................................................................................182
5.2 Troubleshooting.....................................................................................................................................................183
5.2.1 Motor remains stopped. .................................................................................................................................183
5.2.2 Motor rotates in opposite direction.................................................................................................................183
5.2.3 Speed greatly differs from the setting. ...........................................................................................................183
5.2.4 Acceleration/deceleration is not smooth. .......................................................................................................183
5.2.5 Motor current is large.....................................................................................................................................184
5.2.6 Speed does not increase. ..............................................................................................................................184
5.2.7 Speed varies during operation.......................................................................................................................184
5.2.8 Operation mode is not changed properly.......................................................................................................184
5.2.9 Operation panel (FR-DU04) display is not provided. .....................................................................................184
5.2.10 POWER lamp is not lit. ..................................................................................................................................184
5.2.11 Parameter write cannot be performed ...........................................................................................................184
5.3 Precautions for Maintenance and Inspection.........................................................................................................185
5.3.1 Precautions for maintenance and inspection.................................................................................................185
5.3.2 Check items ...................................................................................................................................................185
5.3.3 Periodic inspection.........................................................................................................................................185
5.3.4 Insulation resistance test using megger ........................................................................................................186
5.3.5 Pressure test..................................................................................................................................................186